Kerberos realm, used only if Kerberos authentication is used between
the clients and httpfs or between HttpFS and HDFS.
This property is only used to resolve other properties within this
configuration file.

File containing the secret to sign HttpFS hadoop-auth cookies.
This file should be readable only by the system user running HttpFS service.
If multiple HttpFS servers are used in a load-balancer/round-robin fashion,
they should share the secret file.

Defines the authentication mechanism used by httpfs for its HTTP clients.
Valid values are 'simple' or 'kerberos'.
If using 'simple' HTTP clients must specify the username with the
'user.name' query string parameter.
If using 'kerberos' HTTP clients must use HTTP SPNEGO or delegation tokens.